Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
va phuong » va thuong, cac phuong
hanh han » hanh nhan, hanh phan, hanh san
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than tap » toan tap, han tap, phan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - hanh han ((va phuong) or (he thong)) cong tan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh han ((va phuong) OR (he thong)) cong tan than tap*.